<template>
  <div class="login-container">
    <el-form
      ref="loginForm"
      :model="loginForm"
      class="login-form"
      auto-complete="on"
      label-position="left"
    >
      <div class="title-container">
        <h3 class="title">数字图书馆</h3>
      </div>

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="username"
          v-model="loginForm.username"
          placeholder="用户名"
          name="username"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="密码"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon
            :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'"
          />
        </span>
      </el-form-item>

      <el-button
        :loading="loading"
        type="primary"
        style="width: 100%; margin-bottom: 30px"
        @click.native.prevent="handleLogin"
        >登录</el-button
      >
      <el-button
        type="primary"
        style="width: 100%; margin-bottom: 30px; margin-left: 0px"
        @click="freeLogin"
        >游客登录</el-button
      >

      <div class="tips" style="display: flex; justify-content: space-between">
        <span style="margin-right: 20px; cursor: pointer" @click="regist"
          >注册</span
        >
        <span @click="forget" style="cursor: pointer">忘记密码</span>
      </div>
    </el-form>
    <el-dialog
      title="忘记密码"
      :visible.sync="open"
      width="600px"
      append-to-body
      style="background-color: #283443"
    >
      <el-form :model="form" ref="formRef" :rules="rules">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="form.username">
            <el-button slot="append" @click="getCode()">{{
              isRun ? `验证码(${runTime}s)` : `获取验证码`
            }}</el-button>
          </el-input>
        </el-form-item>
        <el-form-item label="验证码" prop="code">
          <el-input v-model="form.code"></el-input>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitPwd">确定</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import { validUsername } from "@/utils/validate";
import { loginWithoutAuth, getCodeByUsername,resetPass  } from "@/api/user";

export default {
  name: "Login",
  data() {
    // 自定义邮箱校验
    // const validateEmail = (rule, value) => {
    //   let emailReg =
    //     /^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,5}$/
    //   if (!value) {
    //     return Promise.reject('邮箱不能为空')
    //   } else if (!emailReg.test(value)) {
    //     return Promise.reject('邮箱格式不正确')
    //   } else {
    //     return Promise.resolve()
    //   }
    // }
    const validateUsername = (rule, value, callback) => {
      if (value.length <= 3 || value.length > 18) {
        callback(new Error("请输入正确的用户名"));
      } else {
        callback();
      }
    };
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error("密码不能少于6位"));
      } else {
        callback();
      }
    };
    return {
      loginForm: {
        username: "",
        password: "",
      },
      loginRules: {
        username: [
          { required: true, trigger: "blur", validator: validateUsername },
        ],
        password: [
          { required: true, trigger: "blur", validator: validatePassword },
        ],
      },
      rules: {
        username: [
          { required: true, trigger: "blur", message: "请输入用户名" },
        ],
        code: [{ required: true, trigger: "blur", message: "请输入验证码" }],
      },
      loading: false,
      passwordType: "password",
      redirect: undefined,
      open: false,
      form: {
        username: undefined,
        code: undefined,
      },
      isRun: false,
      runTime: 300,
    };
  },
  watch: {
    $route: {
      handler: function (route) {
        this.redirect = route.query && route.query.redirect;
      },
      immediate: true,
    },
  },
  methods: {
    // 注册
    regist() {
      this.$router.push({ path: "regist" });
    },
    // 游客登录
    freeLogin() {
      this.$store.dispatch("user/loginWithoutAuth").then(() => {
        this.$router.push({ path: this.redirect || "/" });
        this.$message.success("登录成功");
      });
    },
    // 忘记密码
    forget() {
      this.open = true;
    },
    getCode() {
      if (this.isRun) return; //如果开始倒计时
      this.isRun = true;
      this.autoTimer = setInterval(() => {
        if (this.runTime === 0) {
          this.runTime = 300;
          this.isRun = false;
          // 清除定时器
          clearInterval(this.autoTimer);
          return;
        }
        this.runTime--;
      }, 1000);
      if (this.runTime === 300) {
        getCodeByUsername({ username: this.form.username }).then((res) => {
          if (res.code == 200) {
            console.log(res);
          }
        });
      }
    },
    submitPwd() {
      this.$refs.formRef.validate((valid) => {
        if (valid) {
          resetPass(this.form).then((res) => {
            if (res.code == 200) {
              this.open = false;
              this.$message.success(res.data);
            }
          });
        }
      });
    },
    showPwd() {
      if (this.passwordType === "password") {
        this.passwordType = "";
      } else {
        this.passwordType = "password";
      }
      this.$nextTick(() => {
        this.$refs.password.focus();
      });
    },
    handleLogin() {
      this.$refs.loginForm.validate((valid) => {
        if (valid) {
          this.loading = true;
          this.$store
            .dispatch("user/login", this.loginForm)
            .then(() => {
              this.$router.push({ path: this.redirect || "/" });
              this.loading = false;
              this.$message.success("登录成功");
            })
            .catch((err) => {
              this.loading = false;
              // this.$message.error(err.data)
            });
        } else {
          console.log("error submit!!");
          return false;
        }
      });
    },
  },
};
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff;
$cursor: #fff;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
  min-height: 100%;
  width: 100%;
  background-color: $bg;
  overflow: hidden;

  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
